[WORKAROUND FOUND] Full System Crash (Cannot Alt+F3 to change tty)
Please help if you're able, I've been fighting this for months on other distros, and it was working on Bazzite until 20 min ago, so I don't know what happened 
I believe it's a KDE bug, but since it was working until only 20 min ago, it has to be some configuration of some kind.
I believe it's a KDE bug, but since it was working until only 20 min ago, it has to be some configuration of some kind.
Solution
Better workaround is to put
KWIN_DRM_NO_DIRECT_SCANOUT=1 into /etc/environment and then reboot. There is a small hit to performance (I haven't noticed any hit, but KDE says there is), but the issue is now completely gone. I don't have to use gamescope and I can turn the steam overlay back on too